Toxocariasis is caused by migration of the larvae of Toxocara canis (dog roundworm) and less frequently of T. cati (cat roundworm) through the human tissues. Toxocara are nematode parasites of animals.Toxocariasis is infection of people and animals with intestinal roundworms from dogs (Toxocara canis) and cats (Toxocara cati). Toxocara roundworms can infect dogs and cats of all ages, but infection is particularly common in young puppies and kittens. Most animals show no signs of illness but some may have diarrhea.
Anthelmintics. Albendazole or mebendazole are usually used in advanced or highly symptomatic cases or where there is organ damage. Corticosteroids play a role in suppressing intense allergic manifestations of the disease.In the China, about 47,751 cases of Toxocara infection are reported in humans each year. Almost 13% of the China population is infected with Toxocara.